The therapeutic role of isotretinoin in the management of Behçet's disease: a single-blinded, controlled therapeutic study.

OBJECTIVES: To evaluate the long-term remission efficacy and safety of isotretinoin in the treatment of Behcet's disease (BD). PATIENTS AND METHODS: This single-blind, controlled therapeutic study was conducted in the Department of Dermatology and Venereology at Baghdad Teaching Hospital from February 2011 to January 2012. Thirty patients with BD were included in this work. Each patient received isotretinoin 20 mg orally once daily for 3 months. They were assessed at week 2 and then monthly depending on the Clinical Manifestation Index (CMI) and to record any side effects. At week 12, isotretinoin was stopped and patients were given placebo therapy in a form of glucose capsules for another 3 months. RESULTS: Thirty patients were treated, 14 (46.6%) males and 16 (53.3%) females, with a male to female ratio of 1:1. Their ages ranged from 16 to 64 years (mean +/- standard deviation [SD], 38.4 +/- 10.9 years). During the first 3 months of therapy, the pathergy test, oral pathergy test, and C-reactive protein were significantly minimized. The CMI before isotretinoin therapy ranged between 2 and 8 (mean +/- SD, 4.933 +/- 1.91). After therapy, within the first 14 days, the mean CMI started to decline to a lower level, and it continued to decline significantly until week 12. It then started to increase through week 4 of placebo therapy, but remained statistically significant until the second month of placebo therapy. Isotretinoin therapy also had a statistically significant effect in reducing oral ulcers and skin manifestations. CONCLUSION: Isotretinoin is an effective therapeutic and prophylactic drug in the management of BD.

The therapeutic and prophylactic role of oral zinc sulfate in management of recurrent aphthous stomatitis (ras) in comparison with dapsone.

OBJECTIVE: To evaluate the therapeutic and prophylactic effectiveness of oral zinc sulfate in recurrent aphthous stomatitis (RAS) in comparison with dapsone. METHODS: A double-blind placebo controlled study, conducted in the Department of Dermatology, Baghdad Teaching Hospitals, Baghdad, Iraq between May 2005 and October 2006, in which 45 patients with RAS were recruited and divided into 3 equal groups: group A (on zinc sulfate 150 mg twice daily), group B (on dapsone 50 mg twice daily), and group C (on glucose 250 mg as placebo). The drugs were prepared in identical capsules, and the patients were instructed to take the capsules twice daily after meals (in a double-blind manner). Assessment of each patient was carried out by the Oral Clinical Manifestation Index (OCMI) and the diameter of the ulcers at day 0, day 4, and at the second, fourth, sixth, eighth, tenth, and twelfth weeks of therapy. RESULTS: Forty-five patients were included in the study (25 males and 20 females), and their ages ranged between 16-45 years (mean+/-SD 31.24+/-8.14). In group A, the mean of OCMI and diameter of ulcers improved, with a p=0.0001 for OCMI, and 0.0001 for the diameter for ulcers at the end of the twelfth week of therapy, which was statistically significant. Group B, also showed significant improvement, however, the action was lower and slower (p=0.0001 for OCMI, and 0.001 for the diameter for ulcers). Group C revealed slight non-significant improvement (p=0.028 for OCMI, and 0.034 for the diameter of ulcers). In the sixth week of therapy, zinc sulfate was more effective than dapsone in reducing the OCMI of the ulcers (p=0.007). CONCLUSION: The present study showed that both zinc sulfate and dapsone had significant therapeutic and prophylactic effects in controlling RAS, however, zinc sulfate had much more rapid and sustained action.

Oral zinc sulfate in the treatment of Behcet's disease: a double blind cross-over study.

This was a randomized, controlled, double-blind trial of zinc sulfate in the treatment of Behcet's disease. Patients with Behcet's disease were recruited in this study between November 2001 and February 2003. A clinical manifestations index (CMI) was calculated for each patient. Serum zinc was estimated in all patients both at the beginning and monthly throughout the trial. Serum zinc levels were estimated from 30 healthy normal subjects matched for age and sex as a control group. Patients were randomly allocated to receive either 100 mg zinc sulfate or identical placebo tablet three times daily in a double-blind manner. After 3 months of starting treatment, patients were crossed over, that is, patients on placebo received zinc sulfate and vice versa. Mean serum zinc level in Behcet's disease patients was statistically significantly lower than mean serum zinc levels in healthy the control. In group A (started with zinc sulfate), the mean CMI started to decline directly after the first month of therapy with zinc sulfate to significantly lower levels. After shifting to placebo treatment in the fourth month, the mean of CMI started to rise again gradually but remained significantly lower than levels before therapy for the fourth and fifth months. In group B (started with placebo), the mean of CMI remained high for the first 3 months. After crossing over to zinc sulfate in the fourth month, the mean of CMI started to decrease after the fourth month. An inverse correlation between CMI and serum zinc level was found. No side-effects were seen in either group. In conclusion, zinc sulfate was found to be a good option in the treatment of Behcet's disease.